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Finding the Fourth Proportional to 416.10, 574.38 and 285.69

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Solution

The fourth proportional to 416.10, 574.38 and 285.69 is: 394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.10 : 574.38 = 285.69 : x
  2. Step 2: Convert to fraction form
    416.10/574.38 = 285.69/x
  3. Step 3: Cross multiply
    416.10x = 574.38 × 285.69
  4. Step 4: Simplify right side
    416.10x = 164,094.62
  5. Step 5: Solve for x
    x = 164,094.62/416.10
  6. Step 6: Final answer
    x = 394.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.